Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9CSM callsign genealogy
Currently held by Shuman, Shannon O
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W9CSM's current licensee, walking backwards.
- Shuman, Shannon OTXgranted 2015-02-26cancelled 2022-12-02
Successor callsigns
Callsigns held now by people who previously held W9CSM.
- Morgan, Christopher SINgranted 2008-11-21cancelled 2010-12-13
All historical holders
Every license row we've seen with the callsign W9CSM, oldest first.
- MORGAN, CHRISTOPHER S IN1998-12-01 → cancelled 2008-11-21
- Shuman, Shannon O TX2022-12-02 active